changelog

Minor bugfixes found during the Windows/Cygwin port.

Output to POV-Ray with --output-format povray.

Added a --graphic-state option to cache the results of long program runs for final adjustment of line widths, fill colour, glyph type and so on.

Reading of Matlab binary files.

Added a --ke-drop option which delays termination until the kinetic energy has dropped by the specified dB.

Simplified the potential used in the dynamic — removal of the attractive tail allows us to reduce the number of neighbours and so speed up the dynamic by around a factor of two.

Added a perl script sag2grd which converts a sag(5) file to grd files.

Added a --sag option to the gfs2xyz2D program causing it to write a sag(5) header to the output data.

Fixed floating point exception bug in dim2.c

Fixed a fencepost error in dim2.c which caused a leak in the boundary during the dynamic.

The default value for the --threads option is now 1 rather than the number of CPUs. Use a value of 0 to restore the autodetection.

Removed thread creation/destruction and attendant overhead when the processing is single-threaded.

Removed signal handler for SIGFPE since, according to POSIX, ignoring it results in undefined behaviour.

Several fixes in the autoconf handling of sincos(), alloca() etc for the FreeBSD port.

Added a --glyph option for alternative glyphs. New wedge and triangle glyphs.

Added a --aspect option to adjust the aspect (the ratio of length to width) of the glyph.

Corrected sag(5) documentation

Reduced the verbosity of some warnings

Read and write support for the sag(5) format

Implemented autodetection of input files formats (using file magic)

Added -L option for late decimation and --decimate-contact for finer control the decimation

Ellipse-distance histogram output

Improved and faster calculation of the contact function

Tidied up signal handling (control-c graceful exit)

Improved dimension-one error handling

Improved domain extraction from gridded data

Fixed scale-variance of the viscous drag

Added signal handler for SIGFPE

Fixed a problem with the timestep which caused instabilty on domains subtantially larger than the unit square

PostScript output now has a private dictionary, fixes GMT pstext inclusion problem

Added some more breakpoints

Fixed the missing options.c problem

Improved user statistics

Rewrote dimension one which is now more accurate and clearer, if a bit slower

Arrows now shifted slightly to account for the arrowhead; resulting in arrows more accurately centred in the ellipse.

New command-line option --overfill allows user control of the initial overfilling at dimension 2; the electro2 and electro3 test plots now fill properly.

Improved charge/mass physics with scale invariant and near-homogeneous dynamics.

Added new program gfs2xyz2D, dumps gfs variables to acsii on a uniform grid.

Added multi-threading for the force calculations, added a -j option to the command line to control the number of threads used.

Initial greedy method for "minimal vertex cover" dimension 0 decimation

Command-line option controls metric-tensor cache size

Lennard-Jones truncation for compressible dynamics in dimension 2

Automatic domain built when reading field from data files

Reading fields from gfs (Gerris) datafiles

Reading fields from grd (GMT netCDF) data-files